webrtc/base: Use RTC_DCHECK() instead of assert()

webrtc/base/nattypes.cc

Index: webrtc/base/nattypes.cc
diff --git a/webrtc/base/nattypes.cc b/webrtc/base/nattypes.cc
index 890a6640954be4df3a62419702c2243feff8e728..1e37698f0da5f9d794e74f6b3b9593dee61c3c69 100644
--- a/webrtc/base/nattypes.cc
+++ b/webrtc/base/nattypes.cc
@@ -8,10 +8,10 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <assert.h>
-
 #include "webrtc/base/nattypes.h"
 
+#include "webrtc/base/checks.h"
+
 namespace rtc {
 
 class SymmetricNAT : public NAT {
@@ -44,11 +44,17 @@ public:
 
 NAT* NAT::Create(NATType type) {
   switch (type) {
-  case NAT_OPEN_CONE:       return new OpenConeNAT();
-  case NAT_ADDR_RESTRICTED: return new AddressRestrictedNAT();
-  case NAT_PORT_RESTRICTED: return new PortRestrictedNAT();
-  case NAT_SYMMETRIC:       return new SymmetricNAT();
-  default: assert(0);       return 0;
+    case NAT_OPEN_CONE:
+      return new OpenConeNAT();
+    case NAT_ADDR_RESTRICTED:
+      return new AddressRestrictedNAT();
+    case NAT_PORT_RESTRICTED:
+      return new PortRestrictedNAT();
+    case NAT_SYMMETRIC:
+      return new SymmetricNAT();
+    default:
+      RTC_NOTREACHED();
+      return 0;
   }
 }